Latest Customer Reviews

K&N 57 Series FIPK Air Intake (50-State Legal) Reviews

The installation instructions are poor to fair at best. The instructions could be made easy if each step would show the exact part (which it does) and the exact hardware to install that part (which it does not.) This was the biggest issue I had. It took about 3.5 hours instead of the 1.5 hours claimed. Also I did not have any air leaks when I finished. Now that I've done it through trial and error, I could write the instructions for them and save a lot of hastle for future installers.

Not sure which 2008 GMC Yukon XL Air Intake Systems are right for you? We have over 20796 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:

"They wern't lyin. i could feel the increase in performance right away. Probably have to get a new right rear tire soon. Too early to tell about MPG, but any increase is o.k with me. I am reccomending this product to anyone who will listen." —Brian H from Merrill , WI bought a K&N 57 Series FIPK Air Intake (Fuel Injection Performance Kit) for a 2008 GMC Yukon XL, New body style, 5.4L V8.